Device for eliminating noxious substances contained in tobacco smoke



March 22, 1938. L. G. GAUTRON 2,112,018

DEVICE FOR ELIMINATING NOXIOUS SUBSTANCES CONTAINED IN TOBACCO SMOK Filed oct. 4, 1934 Patented Mar. 22, 1938 UNITED STATES PATENT OFFICE DEVICE FOR ELIMINATING NOXIOUS SUBSTANCES CONTAINED IN TOBAC'- CO SMOKE Louis Georges Gautron, Geneva, Switzerland 1 Claim.

'I'his invention relates to improvements in devices for eliminating noxious substances contain-ed in tobacco smoke.

The accompanying drawing illustrates examples of construction of the invention.

Figure 1 is a vertical sectional view of a tobacco pipe embodying the present invention.

Fig. 2 is an elevational view of one of the capshaped members of the present invention with the slit closed.

Fig. 3 is a View similar to Fig. 2 with the slit open.

Fig. 4 is an end View of the cap-shaped member.

As shown in the drawing, the pipe comprises a l5 bowl portion 6, a mouthpiece I, and a connecting stem 5.

The bowl of the pipe is integral with a tube 6', connected to draw-tube or mouthpiece 'l for the smoke by means of tube or stem 5. A union I3 screwed into the mouthpiece 'I is forced into the tube 5 and a union I2 similarly connects the tubes 5 and 6'.

The stem portion of the bowl is provided with a chamber in which is mounted a smoke-treating unit. This unit comprises upper and lower tubular members I6 and I'I, respectively, joined together as illustrated. The lower member I'I has a recessed portion I 8 which is placed in register with the smoke duct I9 of the bowl. A nozzle I4 projects upwardly from. the recessed portion of mlember I1 into the chamber I0 of the upper member I6 and has a rubber cap-shaped member I fitted thereon. The lower portion of member I'l serves as a receptacle 9 for saliva and is provided with a drain plug II.

A cage-like member is carried by the upper end of member I6 for receiving and retaining a washer 4 lled with spongy material 3. Stem 5 has a tube I5 provided with a screw-threaded base 40 mounted thereon in axial alignment with the smoke duct thereof. This tube serves as a nozzle for conducting smoke into a chamber formed in the mouthpiece stem l. A rubber cap-shaped member 2 is fitted on the end of tube I5.

45 Washer 8, iilled with spongy material, surrounds tube I5 and is adapted to absorb the products of condensation and the saliva.

Cap-shaped members I and 2 are provided with narrow slits I and 2 on their extremities. These slits permit smoke to pass in one direction, but prevent the ow of matter in the opposite direction.

The smoke is compelled to pass to the interior 5 of the cowls or cap-shaped members I and 2 and the iiexible edges of the slits I and 2 which always tend to come into contact are parted only through the drawing of the smoke. The matters suspended in the latter are held back by the fleXilo ble edges of the slits, and if by condensation or any other cause, an efflux of matters outside the cowls is produced, it falls into the reservoir 9.

The pipe can be easily mounted and dismounted and its inner members cleaned or replaced by l5 others.

The outlet vent of the cowls instead of comprising one or more slits may be a very small hole of circular or other section, provided that it has at least one flexible edge which, continually tending to close the vent, is parted only by the exhaus- H tion of the smoke.

What I claim as my invention and desire to secure by Letters Patent of the United States is:-

In a tobacco smoking device of the character 25 described, a smoke conducting stem provided with upper and lower axially spaced chambers Connected by a smoke duct, said lower chamber being divided into a lower liquid receiving reservoir, an intermediate smoke receiving compartment, and 30 an upper filter compartment, the longitudinal axes of said compartments and reservoir being coincident with each other and with the longitudinal amis of said stem, a nozzle-like member for introducing smoke into the smoke receiving compartment of the lower chamber, a rubber capshaped member iitted on said nozzle-like member, a nozzle-like iitting extending into the upper chamber for introducing smoke, passing through said duct from the lower chamber, into the upper chamber, and a rubber cap-shaped member fitted onto said iitting, both oi said rubber cap-shaped members having a small smoke filtering chordal slit formed in the closed end thereof, said slits being normally closed and adapted to permit the passage of smoke therethrough.

LOUIS GEORGES GAUTRON. 

